clay mineral
noun
any of a group of hydrous aluminum silicate minerals, as kaolinite, illite, and montmorillonite, that constitute the major portion of most clays.
Origin of clay mineral
First recorded in 1945–50
Words nearby clay mineral
claxon,
clay,
clay court,
clay eater,
clay flour,
clay mineral,
clay pigeon,
clay road,
clay stone,
clay, henry,
clay-colored robin
British Dictionary definitions for clay mineral
clay mineral
noun
any of a group of minerals consisting of hydrated aluminium silicates: the major constituents of clays